Patent Number: 6,310,457

Title: Servomotor controller

Abstract: When contents of a program for machining to be executed by a servomotor indicate a cutting mode, a current command is generated by performing speed loop processing by using a speed loop gain for cutting mode, and moreover, a voltage command to a servo amplifier is generated by performing proportional-plus-integral (PI) current loop processing in accordance with the generated current command. On the other hand, when the contents of the machining program indicate a positioning mode, a current command is generated by performing speed loop processing by using a speed loop gain for positioning mode, and moreover, a voltage command to the servo amplifier is generated by performing integral-plus-proportional (I-P) current loop processing in accordance with the generated current command.

Inventors: Iwashita; Yasusuke (Minamitsuru-gun, JP), Okita; Tadashi (Minamitsuru-gun, JP)

Assignee: Fanuc Ltd.

International Classification: G05B 19/19 (20060101); G05B 19/23 (20060101); G05B 019/25 ()

Expiration Date: 10/30/2018